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Welcome to your Energy Circle website!

Please contact us at support@energycircle.com with any questions you may have.

  • Energy Code Assistance
    • Energy Code Facts
    • IECC Blower Door Test
      • Illinois Blower Door Results
    • IECC Duct Testing
      • Illinois Duct Test Results
    • IECC Energy Modeling
    • Energy Code Comparison Charts
  • Indoor Air Quality
    • Air Quality Testing
    • Moisture and Humidity Testing
    • Dust & Particulate Testing
    • Odor Identification
    • Ethylene Oxide Testing
  • Energy Efficiency
    • Home Energy Audit
    • Commercial Energy Audits
    • Electric Homes and Buildings
    • Energy Star for Builders
    • Energy Star for Homeowners
    • LIHTC | Low Income Housing Tax Credits | Energy Rating
    • Testing for Air Leaks
    • The 45L Tax Credit Process
    • The HERS Rating
    • ZERH Certification for Builders
  • Aeroseal
    • Facts & Benefits Duct Sealing
    • Duct Sealing for New Construction and Code Compliance
    • Aeroseal for Commercial Buildings
    • Aeroseal for Existing Homes
    • Aeroseal Service Territory | Illinois Leading Aeroseal Dealer
    • The Cost of Duct Leakage
  • HVAC Design & Testing
    • HVAC Residential Design, Test, & Balance
    • HVAC Commercial Design, Test, & Balance
    • Ventilation Systems Defined
    • Commercial Client List
    • HVAC Sizing Territory | Mechanical Sizing | Test and Balance
  • Building Science Training
    • BPI Training
      • BPI Healthy Home Evaluator
    • RESNET Training
    • Continuing Education
    • Energy Star Training
    • RESNET Rating Providership